What is the proper marking for the taxiway edge?

The proper marking for the taxiway edge is indicated by double yellow lines. In aviation, double yellow lines serve to delineate the boundary between the taxiway and adjacent areas, such as operational and non-operational areas. This visual cue is critical for pilots and vehicle operators, as it helps to maintain safe distances from areas where movement may be restricted or where there may be hazards.

Understanding these markings is crucial for ensuring safe operations on the airfield, as it allows both aircraft and ground vehicles to navigate correctly and maintain awareness of their surroundings. The use of double yellow lines signifies a clear and defined edge of the taxiway, providing a strong visual signal to all users of the airfield.